EP3054168B1 - Vorrichtung zum einspeisen eines gases in einen geschlossenen kreislauf - Google Patents

Vorrichtung zum einspeisen eines gases in einen geschlossenen kreislauf Download PDF

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Publication number
EP3054168B1
EP3054168B1 EP16154250.1A EP16154250A EP3054168B1 EP 3054168 B1 EP3054168 B1 EP 3054168B1 EP 16154250 A EP16154250 A EP 16154250A EP 3054168 B1 EP3054168 B1 EP 3054168B1
Authority
EP
European Patent Office
Prior art keywords
chamber
gas
circuit
circulating
closed circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16154250.1A
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English (en)
French (fr)
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EP3054168A1 (de
Inventor
David ATTIE
Patrick Magnier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
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Publication of EP3054168A1 publication Critical patent/EP3054168A1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0039—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices
    • B01D46/0041—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps

Definitions

  • the present invention relates to a device for circulating a gas in a closed circuit, for example for the purpose of filtering or purifying it.
  • a device for circulating a gas in a closed circuit for example for the purpose of filtering or purifying it.
  • Such a device, used for the circulation of helium, is described in the patent US 5,187,938 .
  • a gas is generally set in motion by means of an electric pump that can cooperate with a reservoir.
  • the present invention aims at providing a device for circulating a gas in a compact closed circuit, light, clean and low power consumption that can for example be used in aerospace applications, in particular for filtration or chamber and tank purification.
  • upstream and downstream are defined according to the flow direction of the gas inside the circuit illustrated in FIG. figure 1 by references 10.
  • the device according to the invention makes it possible to dispense with the use of a pump to allow the circulation of a gas in a closed circuit.
  • the filtration means is a permanent filter adapted to filter the gas of said circuit.
  • the single figure illustrates a closed circuit 200 in which a gas is set in motion by a circulation device 100 according to the invention.
  • the circulation device 100 is formed by two shells 110, 120 of stainless steel resistant to vacuum and at very high pressure, that is to say at least up to 200 bar.
  • the two shells 110, 120 are assembled together by ad hoc means formed for example by a set of ferrules and clamping bolts, so that the connection is sealed and withstands the required pressures.
  • the two shells 110, 120 thus delimit the outer casing of the device 100.
  • the first chamber A of the device 100 has an internal volume greater than the internal volume of the second chamber B. This difference in volume thus makes it easier to create a pressure difference in the circuit for priming and maintaining the flow of gas in the circuit.
  • the ratio between the volume of the first chamber A and the second chamber B is greater than or equal to two.
  • the chamber A and the chamber B define an overall internal volume whose geometry is optimized to facilitate the flow of gas between the device 100 and the connecting pipes 210, 220.
  • the chamber A is of substantially conical shape with a small diameter. and a large diameter, the small diameter being positioned at the level of the upstream pipe 210.
  • the chamber B is also of partially conical shape having a small diameter and a large diameter, the small diameter being positioned at the downstream pipe 220.
  • the geometry of the internal volumes of the device is adapted so as to get the least turbulent diet possible.
  • the dimensions and the shape of the device 100 will be adapted to minimize friction and so as to obtain a flow inside the device 100 characterized by a Reynolds number as low as possible, and ideally less than 3000.
  • the inlet cone of the device 100 formed by the first chamber A has an angle ⁇ A of less than 10 °
  • the exit cone of the device 100 formed by the second chamber. B has an angle ⁇ B of the order of 40 °.
  • the device 100 further comprises a propeller device 130 comprising a plurality of blades set in motion by a low voltage electric motor (not shown).
  • a low voltage electric motor (not shown).
  • the device 100 comprises, at one of these two shells 110, 120, a vacuum bulkhead crossing and the pressure required for the passage of the low-voltage supply cables. of the electric motor.
  • the electric motor is powered by a low voltage power supply of the order of 3 to 12 volts.
  • the electric motor is trapped in a sealed casing so as to minimize the pollution of the air flow passing through the device 100.
  • the propeller device 130 is positioned between the first chamber A and the second chamber B in an intermediate zone situated between the two conical parts of the two chambers A and B.
  • the outer casing of the device 100 has a substantially cylindrical shape so as to allow positioning and rotation of the propeller device 130.
  • the device 100 is dimensioned so that the outer diameter of the propeller 130 is greater than the diameter of the connecting tubes of the circuit.
  • the device 100 for circulating a gas makes it possible to be integrated in a closed circuit, such as, for example, a filtration or purification circuit for a chamber 300.
  • the circuit presents a filtration element 230.
  • the filtration element 230 is a permanent filter positioned at the inlet or outlet of the chamber 300 to be filtered or purified.
  • the device 100 is made with selected materials and selected according to the type of application.
  • the materials used have the property of being inert in contact with the circuit gas so as to avoid any unnecessary pollution of the gas.
  • heating means and / or cooling the circulating gas inside the closed circuit so as to create a natural circulation of gas by convection in addition to the circulation gas created by the device according to the invention.
  • These means for heating and / or cooling the gas may be integrated in the device 100 or positioned on the connection pipes of the circuit.
  • these means for heating and / or cooling the gas will be used mainly for applications requiring a high flow rate and efficiency, the heating and / or cooling means being consumers of electrical energy, the device 100 according to the invention. invention seeking on the contrary to minimize the electrical input necessary to perform a filtration function of a sealed chamber.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Claims (6)

  1. Vorrichtung (100), um ein Gas in einem geschlossenen Kreislauf (200) in Umlauf zu bringen, wobei die genannte Vorrichtung (100) ein erstes, vorgeschaltetes Ende und ein zweites, nachgeschaltetes Ende aufweist, die geeignet sind, um an den genannten Kreislauf (200) angeschlossen zu werden; wobei die genannte Vorrichtung umfasst:
    - eine erste Kammer (A), die ein erstes internes Volumen definiert und eine wenigstens teilweise konische Form aufweist, die einen Mindestdurchmesser aufweist, der an dem genannten vorgeschalteten, an den genannten Kreislauf (200) angeschlossenen Ende angeordnet ist;
    - eine zweite Kammer (B), die ein zweites internes Volumen definiert, wobei die genannte zweite Kammer (B) der genannten ersten Kammer (A) nachgeschaltet ist und eine wenigstens teilweise konische Form aufweist, die einen Mindestdurchmesser aufweist, der an dem genannten nachgeschalteten, an den genannten Kreislauf (200) angeschlossenen Ende angeordnet ist;
    - einen Propeller (130), der mehrere Blätter umfasst, die regelmäßig um eine Rotationsachse angeordnet sind; wobei der genannte Propeller (130) zwischen der genannten ersten Kammer (A) und der genannten zweiten Kammer (B) positioniert ist;
    - Mittel, um die genannte Rotationsachse zum Rotieren zu bringen, die den genannten Propeller (130) in Bewegung bringt; wobei die genannte Vorrichtung dadurch gekennzeichnet ist, dass das interne Volumen der ersten Kammer (A) größer ist als das interne Volumen der zweiten Kammer (B); und dass die konische Form der ersten Kammer (A) durch einen Winkel (αA) gekennzeichnet ist und dass die konische Form der zweiten Kammer (B) durch einen Winkel (αB) gekennzeichnet ist, wobei der Winkel (αA) der konischen Form der ersten Kammer (A) kleiner ist als der Winkel (αB) der konischen Form der zweiten Kammer (B).
  2. Vorrichtung (100), um ein Gas in einem geschlossenen Kreislauf (200) in Umlauf zu bringen, gemäß dem voranstehenden Anspruch, dadurch gekennzeichnet, dass das Verhältnis zwischen dem internen Volumen der ersten Kammer (A) und dem internen Volumen der zweiten Kammer (B) größer als oder gleich 2 ist.
  3. Vorrichtung (100), um ein Gas in einem geschlossenen Kreislauf (200) in Umlauf zu bringen, gemäß einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass die Mittel, um den genannten Propeller (130) in Rotation zu bringen, durch einen Niedrigspannungs-Elektromotor geformt sind.
  4. Vorrichtung (100), um ein Gas in einem geschlossenen Kreislauf (200) in Umlauf zu bringen, gemäß einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass die Mittel, um den genannten Propeller (130) in Rotation zu bringen, in dem internen Volumen der genannten Vorrichtung positioniert sind.
  5. Filtersystem eines Gases eines geschlossenen Kreislaufes, wobei das genannte System dadurch gekennzeichnet ist, dass es umfasst:
    - eine Vorrichtung (100), um das genannte Gas in Umlauf zu bringen, gemäß einem der voranstehenden Ansprüche;
    - eine Kammer (300), die ein zu filterndes Gasvolumen umfasst;
    - Anschlussrohrleitungen (2100, 220), die das Anschließen der genannten Kammer (300) an die genannte Vorrichtung (100) zum in-den-Umlaufbringen ermöglicht;
    - ein geeignetes Filtermittel, um das genannte Gas des Kreislaufs zu filtern.
  6. Filtersystem eines Gases eines geschlossenen Kreislaufs gemäß dem voranstehenden Anspruch, dadurch gekennzeichnet, dass das genannte Filtermittel ein geeigneter Dauerfilter zum Filtern des genannten Gases des genannten Kreislaufs ist.
EP16154250.1A 2015-02-09 2016-02-04 Vorrichtung zum einspeisen eines gases in einen geschlossenen kreislauf Active EP3054168B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1550987A FR3032492B1 (fr) 2015-02-09 2015-02-09 Dispositif de mise en circulation d'un gaz dans un circuit ferme

Publications (2)

Publication Number Publication Date
EP3054168A1 EP3054168A1 (de) 2016-08-10
EP3054168B1 true EP3054168B1 (de) 2017-12-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP16154250.1A Active EP3054168B1 (de) 2015-02-09 2016-02-04 Vorrichtung zum einspeisen eines gases in einen geschlossenen kreislauf

Country Status (3)

Country Link
US (1) US10258914B2 (de)
EP (1) EP3054168B1 (de)
FR (1) FR3032492B1 (de)

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Also Published As

Publication number Publication date
FR3032492A1 (fr) 2016-08-12
US10258914B2 (en) 2019-04-16
FR3032492B1 (fr) 2018-08-17
US20160228806A1 (en) 2016-08-11
EP3054168A1 (de) 2016-08-10

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